JP2008008210A - Engine control device - Google Patents

Engine control device Download PDF

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JP2008008210A
JP2008008210A JP2006179929A JP2006179929A JP2008008210A JP 2008008210 A JP2008008210 A JP 2008008210A JP 2006179929 A JP2006179929 A JP 2006179929A JP 2006179929 A JP2006179929 A JP 2006179929A JP 2008008210 A JP2008008210 A JP 2008008210A
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Prior art keywords
cover
case
engine control
peripheral
adhesive
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JP4357504B2 (en
Inventor
Masahiko Asano
Soji Igarashi
Masaru Kamoshita
Masahiro Sasaki
壮志 五十嵐
正浩 佐々木
雅彦 浅野
勝 鴨志田
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Hitachi Ltd
株式会社日立製作所
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/06Hermetically-sealed casings
    • H05K5/062Hermetically-sealed casings sealed by a material injected between a non-removable cover and a body, e.g. hardening in situ
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/0026Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0047Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
    • H05K5/0052Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB characterized by joining features of the housing parts

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine control device providing high reliability especially by prevention of rust of an outer circumference end surface (cut surface) of a cover in addition to water proofing property and dust proofing property, while keeping manufacturing cost low. <P>SOLUTION: This device is provided with a circuit board 12 for engine control, an aluminum die-cast case body 20 having an upper surface thereof opened and storing the circuit board 12 or the like, a cover 30 made of ferrous metal plate having surface treatment applied beforehand thereon such as plated steel plate fastened and fixed on the case body 20 by a setscrew 40 to close the upper surface opening of the case body 20. A pedestal 24 or a groove 25 to which liquid or jelly water proofing adhesive 50 is applied or deposited is provided at the upper surface opening part of the case body 20 for sealing an inside of the case body 20, and the whole outer circumference end surface 33a of the cover 30 is embedded in the water proofing adhesive 50 applied or deposited to the pedestal 24 or the groove 25 and is substantially coated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、エンジン制御装置に係り、特に、上面が開口したケース本体と前記上面開口を塞ぐように該ケース本体に止めねじで締付固定されるカバーと、を備え、前記ケース本体とカバーとの間に防水用接着剤を介装するようにしたものに関する。   The present invention relates to an engine control device, and in particular, includes a case main body having an upper surface opened and a cover fastened and fixed to the case main body with a set screw so as to close the upper surface opening. It is related with what put the adhesive for waterproofing in between.
従来より、エンジン制御用の回路基板等を収納するための収納ケースは、防水性、防塵及び防錆の観点から防水構造をとることが一般的である。防水構造は、成形された弾性部材(シール材)をケース本体とカバーとで挟み込んで緊迫力を持たせて防水するものと、液状ないしゼリー状の防水用接着剤を用いて防水するものが主流である(例えば下記特許文献1を参照)。   Conventionally, a storage case for storing a circuit board for engine control or the like generally has a waterproof structure from the viewpoint of waterproofness, dustproofing and rustproofing. There are two main waterproof structures: a molded elastic member (sealing material) sandwiched between the case body and the cover to give a tight force, and a waterproof structure using a liquid or jelly-like waterproof adhesive. (For example, see Patent Document 1 below).
特開2001−85858号公報JP 2001-85858 A
しかしながら、使用環境如何、特に防錆性が厳しく要求される環境で使用される場合、製造原価が安価なめっき鋼板等(鉄系金属板に予めめっき等の表面処理が施されているもの等)を素材として打ち抜きプレス成形等により作製されたカバーは、めっきが施されていない外周端面(切断面)に錆が発生してしまい、商品価値を低下させるという問題があった。   However, depending on the usage environment, especially when used in environments where rust prevention is severely required, plated steel sheets, etc. that are low in manufacturing costs (such as those in which surface treatment such as plating is applied to ferrous metal sheets in advance) The cover made by punching press molding or the like using the material as a raw material has a problem in that rust is generated on the outer peripheral end surface (cut surface) that is not plated, and the commercial value is lowered.
かかる問題に対し、従来は、外周端面に後でめっきを施したり、カバーの材質を鉄系からアルミ系に変更すること等で対応しているが、かかる対応では、製造原価が増加してしまい、収納ケースを含めたエンジン制御装置が高価なものとなってしまう。   Conventionally, this problem has been dealt with by plating the outer peripheral surface later, or changing the cover material from iron to aluminum. However, such measures increase the manufacturing cost. The engine control device including the storage case becomes expensive.
本発明は、前記した従来の問題を解消すべくなされたもので、その目的とするところは、製造原価を低く抑えたもとで、防水性、防塵性に加えて、特にカバーの外周端面(切断面)に錆が発生しないようにできて、高い信頼性を得ることのできるエンジン制御装置を提供することにある。   The present invention has been made to solve the above-described conventional problems, and its object is to keep the manufacturing cost low, and in addition to waterproofness and dustproofness, in particular, the outer peripheral end surface (cut surface) of the cover. It is possible to provide an engine control device that can prevent rust from being generated and can obtain high reliability.
前記目的を達成すべく、本発明に係るエンジン制御装置の一つは、基本的には、エンジン制御用の回路基板と、該回路基板等が収納される上面が開口したアルミダイカスト製のケース本体と、該ケース本体の上面開口を塞ぐように該ケース本体に止めねじで締付固定された、めっき鋼板等の予め表面処理が施された鉄系金属板を素材するカバーと、を備える。   In order to achieve the above object, one of the engine control devices according to the present invention basically includes a circuit board for engine control, and a case body made of aluminum die-casting with an upper surface in which the circuit board is accommodated. And a cover made of an iron-based metal plate, such as a plated steel plate, which is fastened and fixed to the case body with a set screw so as to close the upper surface opening of the case body.
そして、前記ケース本体の内部を封止すべく、前記ケース本体の上面開口部に液状ないしゼリー状の防水用接着剤が塗布ないし盛り付けられる台座もしくは溝が設けられ、該台座もしくは溝に塗布ないし盛り付けられた防水用接着剤により前記カバーの全外周端面が実質的に被覆されている前記防水用接着剤により前記カバーの全外周端面が実質的に被覆されていることを特徴としている。   In order to seal the inside of the case body, a pedestal or groove to which a liquid or jelly-like waterproof adhesive is applied or placed is provided in the upper surface opening of the case body, and the pedestal or groove is coated or placed. The outer peripheral end surface of the cover is substantially covered with the waterproof adhesive. The outer peripheral end surface of the cover is substantially covered with the waterproof adhesive.
本発明に係るエンジン制御装置の他の一つは、上記基本構成のもとで、前記ケース本体の内部を封止するように、前記ケース本体の前記止めねじによる前記カバーの締付固定部より内周側における前記ケース本体と前記カバーとの間に液状ないしゼリー状の防水用接着剤が介装されるとともに、前記締付固定部を封止するように、前記締付固定部の外周側における前記ケース本体と前記カバーとの間にも液状ないしゼリー状の防水用接着剤が介装されていることを特徴としている。   Another one of the engine control devices according to the present invention is based on the above-described basic configuration, from the tightening fixing portion of the cover by the set screw of the case body so as to seal the inside of the case body. A liquid or jelly-like waterproof adhesive is interposed between the case main body and the cover on the inner peripheral side, and the outer peripheral side of the tightening and fixing portion so as to seal the tightening and fixing portion. A liquid or jelly-like waterproof adhesive is interposed between the case main body and the cover.
前記カバーは、好ましくは、予め表面にめっきが施された鉄系金属板を素材として打ち抜きプレス成形により作製したものとされる。   The cover is preferably manufactured by punching and pressing using an iron-based metal plate whose surface is previously plated.
他の好ましい態様では、前記カバーは、鍔状部を有する逆皿形ないしハット形とされ、前記鍔状部の全外周端面が前記台座もしくは溝に塗布ないし盛り付けられた防水用接着剤により実質的に被覆される。   In another preferred embodiment, the cover has an inverted dish shape or a hat shape having a bowl-shaped portion, and is substantially formed of a waterproof adhesive in which the entire outer peripheral end surface of the bowl-shaped portion is applied to or mounted on the pedestal or groove. Coated.
この場合、好ましい態様では、前記カバーにおける鍔状部の外周端部が下向きに折り曲げられる。   In this case, in a preferred embodiment, the outer peripheral end portion of the hook-shaped portion in the cover is bent downward.
別の好ましい態様では、前記ケース本体及びカバーは、平面視矩形とされ、前記ケース本体の四隅に前記締付固定部が設けられる。   In another preferred embodiment, the case main body and the cover are rectangular in a plan view, and the fastening fixing portions are provided at four corners of the case main body.
他の好ましい態様では、前記締付固定部に前記止めねじがねじ込まれる雌ねじ部が設けられるとともに、該雌ねじ部に前記防水用接着剤が流れ込まないようにすべく、前記締付固定部の上端部に凸部が突設される。この場合、好ましくは、前記凸部に、空気抜き用の切欠溝が少なくとも一箇所形成される。   In another preferred aspect, an internal thread portion into which the set screw is screwed is provided in the tightening fixing portion, and an upper end portion of the tightening fixing portion is provided so that the waterproof adhesive does not flow into the internal thread portion. A projecting portion is provided on the projection. In this case, preferably, at least one notch groove for air venting is formed in the convex portion.
本発明のエンジン制御装置では、カバーの全外周端面(切断面)が、例えばケース本体に設けられた台座上に盛り付けられた防水用接着剤中に埋設されて実質的に被覆されるので、該外周端面が空気と接触することが阻止され、その結果、錆の発生を確実に防止できる。そのため、カバーにめっき鋼板等の安価な鉄系金属板を用いたもとで、厳しい環境下においても高い防水性、防塵性に加えて高い防錆性を確保でき、コスト削減や信頼性の向上等を効果的に図ることができる。   In the engine control device of the present invention, the entire outer peripheral end surface (cut surface) of the cover is embedded and substantially covered with, for example, a waterproof adhesive placed on a pedestal provided in the case body. The outer peripheral end face is prevented from coming into contact with air, and as a result, the generation of rust can be reliably prevented. For this reason, it is possible to ensure high rust resistance in addition to high waterproof and dustproof properties even in harsh environments by using inexpensive ferrous metal plates such as plated steel sheets for the cover, thereby reducing costs and improving reliability. Effectively.
また、ケース本体の内部を封止するように、ケース本体の締付固定部より内周側におけるケース本体とカバーとの間に防水用接着剤が介装されるとともに、前記締付固定部を封止するように、該締付固定部の外周側におけるケース本体とカバーとの間にも防水用接着剤が介装されることにより、止めねじ部分での錆の発生や弛みを確実に防止でき、信頼性を一層高めることができる。   Further, a waterproof adhesive is interposed between the case main body and the cover on the inner peripheral side from the case body tightening fixing portion so as to seal the inside of the case main body, and the tightening fixing portion is A waterproof adhesive is also inserted between the case body and the cover on the outer peripheral side of the tightening and fixing part so as to seal, thereby reliably preventing rust generation and loosening at the set screw. And reliability can be further improved.
以下、本発明のエンジン制御装置の実施の形態を図面を参照しながら説明する。   Embodiments of an engine control apparatus according to the present invention will be described below with reference to the drawings.
図1、図2は、それぞれ本発明に係るエンジン制御装置の一実施形態を示す概略分解斜視図、断面図である。   1 and 2 are a schematic exploded perspective view and a cross-sectional view, respectively, showing an embodiment of an engine control device according to the present invention.
図示実施形態のエンジン制御装置1は、マイクロコンピュータによる電子制御式のものであり、エンジン制御用の回路基板12と、この回路基板12と外部の機器(各種センサやアクチュエータ類)との信号のやりとりを行うためのコネクタ15と、前記回路基板12等が収納される上面が開口したケース本体20と、このケース本体20の上面開口を塞ぐように該ケース本体20に止めねじ(座金付き六角ボルト)40で締付固定されるカバー30と、を備えている。   The engine control apparatus 1 of the illustrated embodiment is of an electronic control type by a microcomputer, and exchange of signals between the circuit board 12 for engine control and the circuit board 12 and external devices (various sensors and actuators). Connector 15 for carrying out the operation, a case main body 20 having an upper surface in which the circuit board 12 and the like are accommodated, and a set screw (hexagonal bolt with washer) on the case main body 20 so as to close the upper surface opening of the case main body 20 And a cover 30 fastened and fixed at 40.
前記回路基板12には、エンジン制御用の電子部品(コンピュータ部品)が搭載されるとともに所定の配線パターンが形成されている。具体的には、図7に回路構成が模式的に示されているように、相互にバス接続されたCPU101、ROM102、RAM103、及び入出力ポート104と、クランク角センサや水温センサ等の各種センサ類からの検出信号が前記コネクタ15を介して入力される入力回路105と、点火出力回路111や噴射弁駆動回路112等の各種アクチュエータ駆動回路と、を有し、前記点火出力回路111や噴射弁駆動回路112等の各種アクチュエータ駆動回路からは、点火プラグ121や燃料噴射弁122等の各種アクチュエータに、前記コネクタ15を介して所定のタイミングで駆動制御信号が出力されるようになっている。   On the circuit board 12, electronic parts (computer parts) for engine control are mounted and a predetermined wiring pattern is formed. Specifically, as schematically shown in FIG. 7, the CPU 101, the ROM 102, the RAM 103, and the input / output port 104 connected to each other by a bus, and various sensors such as a crank angle sensor and a water temperature sensor. An input circuit 105 to which a detection signal from the input is input via the connector 15 and various actuator drive circuits such as an ignition output circuit 111 and an injection valve drive circuit 112, and the ignition output circuit 111 and the injection valve A drive control signal is output from the various actuator drive circuits such as the drive circuit 112 to the various actuators such as the spark plug 121 and the fuel injection valve 122 via the connector 15 at a predetermined timing.
前記ケース本体20は、アルミダイカスト製で、前後左右の側壁20a、20b、20c、20d、及び段付きの底壁20e(前部側が浅い)を有する平面視矩形の箱形とされ、底壁20e(の上面)には、前記回路基板12が載せられて止めねじ40で締付固定される複数本の支柱27が立設されるとともに、その下面には、複数枚の冷却フィン28が設けられている。   The case body 20 is made of aluminum die-casting and has a rectangular box shape in plan view having front and rear side walls 20a, 20b, 20c, 20d and a stepped bottom wall 20e (shallow front side). (Upper surface) is provided with a plurality of support columns 27 on which the circuit board 12 is placed and fastened and fixed with a set screw 40, and a plurality of cooling fins 28 are provided on the lower surface thereof. ing.
また、ケース本体20の四隅には、カバー30(の鍔状部32)の四隅が押し当てられて止めねじ40により締付固定される締付台座(締付固定部)22が設けられるとともに、後部側壁20dには、前記コネクタ15が装着されている。   In addition, at the four corners of the case body 20, there are provided fastening bases (tightening fixing portions) 22 that are pressed against the four corners of the cover 30 (the hook-like portion 32) and fastened and fixed by the set screws 40. The connector 15 is attached to the rear side wall 20d.
そして、上面開口を形成する側壁20a、20b、20c、20d(締付台座22部分及びコネクタ15の上面立壁15b部分を含む)の内周側には、全周にわたって、前記締付台座22より段下げされた、防水用接着剤50が盛り付けられる盛付台座24が設けられるとともに、前記締付台座22の外周側(側壁20a、20b、20c、20d側)にも、前記盛付台座22にその底面が面一で連なる、防水用接着剤50が盛り付けられる盛付溝25が設けられている。   Then, on the inner peripheral side of the side walls 20a, 20b, 20c, 20d (including the tightening pedestal 22 part and the upper surface standing wall 15b part of the connector 15) that form the upper surface opening, the step is made from the tightening pedestal 22 over the entire circumference. A lowered pedestal 24 on which the waterproofing adhesive 50 is lowered is provided, and also on the outer peripheral side (side walls 20a, 20b, 20c, 20d side) of the fastening pedestal 22, There is provided a grooved groove 25 on which the bottom surface is flush with the waterproofing adhesive 50.
ここでは、防水用接着剤50として、液状のものより粘性が高く、盛り付けた際に流れない、ある程度の形状保持性を持つゼリー状のものが用いられる。なお、このゼリー状の防水用接着剤50は、一般に市販されているもので、硬化するのに室温では3〜4日要するが、100°C程度に昇温させると1時間程度で硬化する。   Here, as the waterproofing adhesive 50, a jelly-like adhesive having a certain degree of shape-retaining property that is higher in viscosity than liquid and does not flow when placed is used. The jelly-like waterproof adhesive 50 is commercially available, and it takes 3 to 4 days at room temperature to cure. However, when it is heated to about 100 ° C., it is cured in about 1 hour.
一方、カバー30は、予め表面にめっきが施された鉄系金属板であるめっき鋼板を素材として打ち抜きプレス成形により、鍔状部32(外周端部33が下向きに折り曲げられている)を有する逆皿形ないしハット形に作製したものであり、前記鍔状部32の外周端部33の下端面33aが、カバー30においてめっきが施されていない外周端面(切断面)となっており、この外周端面33aが空気に接触すると錆が発生するという問題がある。   On the other hand, the cover 30 has a flange-like portion 32 (the outer peripheral end portion 33 is bent downward) by punching and pressing a plated steel plate, which is an iron-based metal plate whose surface is previously plated. The bottom end surface 33 a of the outer peripheral end portion 33 of the bowl-shaped portion 32 is an outer peripheral end surface (cut surface) that is not plated on the cover 30. There is a problem that rust is generated when the end face 33a comes into contact with air.
そこで、本実施形態では、次のように、ケース本体20へのカバー30の取付構造、並びに、防水用接着剤50による防水構造及び防錆構造を採るようにされている。   Therefore, in the present embodiment, a structure for attaching the cover 30 to the case body 20 and a waterproof structure and a rust preventive structure using the waterproof adhesive 50 are adopted as follows.
すなわち、ケース本体20にカバー30を取り付ける前に、前記ゼリー状の防水用接着剤50を前記盛付台座24及び盛付溝25に、そこから溢れ出ないように、所定の幅、厚みをもって盛り付ける。この場合、盛付台座24には、カバー30の鍔状部32下面と防水用接着剤50とが隙間を生じることなく密着するように、防水用接着剤50を締付台座22の上面より上方に突出するように(断面山盛り状となるように)盛り付ける。また、盛付溝25には、防水用接着剤50をその上面が締付台座22の上面より下方となるように(前記鍔状部32の外周端面33aを防水用接着剤50中に埋設した際に溢れ出ないように)盛り付ける。   That is, before attaching the cover 30 to the case body 20, the jelly-like waterproofing adhesive 50 is placed on the pedestal 24 and the groove 25 with a predetermined width and thickness so as not to overflow from there. . In this case, the waterproof adhesive 50 is placed above the upper surface of the tightening pedestal 22 so that the lower surface of the bowl-shaped portion 32 of the cover 30 and the waterproof adhesive 50 are in close contact with the serving base 24 without generating a gap. So that it protrudes into the shape (so that it has a cross-sectional shape). Further, the waterproofing adhesive 50 is embedded in the filling groove 25 so that the upper surface of the waterproofing adhesive 50 is lower than the upper surface of the fastening base 22 (the outer peripheral end surface 33a of the hook-like portion 32 is embedded in the waterproofing adhesive 50. So as not to overflow)
しかる後、カバー30(の鍔状部32の四隅)を締付台座22に載せ置くとともに、鍔状部32の外周端面33aを盛付台座24及び盛付溝25に盛り付けられている防水用接着剤50中に押し込んで埋設する。この場合、外周端面33aと盛付台座24(の上面及び盛付溝25の底面)との間に所定の隙間αが形成されるように各部の寸法等が設定されている。   Thereafter, the cover 30 (the four corners of the hook-shaped portion 32) is placed on the fastening base 22, and the outer peripheral end surface 33a of the hook-shaped portion 32 is mounted on the pedestal 24 and the groove 25. It is buried by being pushed into the agent 50. In this case, the dimensions and the like of each part are set such that a predetermined gap α is formed between the outer peripheral end surface 33a and the pedestal 24 (the upper surface thereof and the bottom surface of the grooving groove 25).
その後、止めねじ40をカバー30の鍔状部32に形成された挿通穴34を介して、締付固定部22に設けられた雌ねじ部26にねじ込んでカバー30をケース本体20に締付固定する。   Thereafter, the cover 30 is fastened and fixed to the case body 20 by screwing the set screw 40 into the female screw portion 26 provided in the fastening fixing portion 22 through the insertion hole 34 formed in the flange-like portion 32 of the cover 30. .
これにより、防水用接着剤50が硬化すると、ケース本体20及びカバー30の内部が防水用接着剤50により封止されるとともに、防水用接着剤50中に埋設されたカバー30の全外周端面33aが防水用接着剤50で実質的に被覆された状態となり、さらに、締付台座22より内周側に設けられている盛付台座24に盛り付けられた防水用接着剤50に鍔状部32の下面が密着した状態となる。   As a result, when the waterproof adhesive 50 is cured, the inside of the case body 20 and the cover 30 is sealed with the waterproof adhesive 50, and the entire outer peripheral end face 33 a of the cover 30 embedded in the waterproof adhesive 50. Is substantially covered with the waterproof adhesive 50, and the waterproof adhesive 50 provided on the pedestal pedestal 24 provided on the inner peripheral side of the tightening pedestal 22 is formed on the waterproof adhesive 50. The bottom surface is in close contact.
このように、本実施形態のエンジン制御装置1では、カバー30の全外周端面(切断面)33aが、ケース本体20に設けられた台座24、溝25上に盛り付けられた防水用接着剤中50に埋設されて実質的に被覆されるので、該外周端面33aが空気と接触することが阻止され、その結果、錆の発生を確実に防止できる。そのため、カバーにめっき鋼板等の安価な鉄系金属板を用いたもとで、厳しい環境下においても高い防水性、防塵性に加えて高い防錆性を確保でき、コスト削減や信頼性の向上等を効果的に図ることができる。   Thus, in the engine control device 1 of the present embodiment, the entire outer peripheral end surface (cut surface) 33a of the cover 30 is 50 in the waterproof adhesive placed on the base 24 and the groove 25 provided in the case body 20. Since the outer peripheral end face 33a is prevented from coming into contact with air, the generation of rust can be reliably prevented. For this reason, it is possible to ensure high rust resistance in addition to high waterproof and dustproof properties even in harsh environments by using inexpensive ferrous metal plates such as plated steel sheets for the cover, thereby reducing costs and improving reliability. Effectively.
また、ケース本体20の内部を封止するように、ケース本体20の締付固定部22より内周側におけるケース本体20とカバー30との間に防水用接着剤が介装されるとともに、前記締付固定部22を封止するように、該締付固定部22の外周側におけるケース本体20とカバー30との間にも防水用接着剤50が介装されることにより、止めねじ40部分での錆の発生や弛みを確実に防止でき、信頼性を一層高めることができる。   Further, a waterproof adhesive is interposed between the case body 20 and the cover 30 on the inner peripheral side of the case body 20 so as to seal the inside of the case body 20, and A waterproof adhesive 50 is also interposed between the case main body 20 and the cover 30 on the outer peripheral side of the tightening / fixing part 22 so as to seal the tightening / fixing part 22, so that the set screw 40 It is possible to reliably prevent the occurrence of rust and slack in the steel, and further increase the reliability.
図3は、本発明に係るエンジンの制御装置の他の実施形態を示している。本実施形態のエンジン制御装置2は、カバー30の板厚等の関係で、上記実施形態のように、カバー30の鍔状部32の外周端部33を下向きに折り曲げることができない場合等の対応を開示したもので、図示のエンジン制御装置2では、カバー30の鍔状部32の四隅部分32Aのみが、盛付溝25が形成されていない締付台座22’に載せ置かれ、鍔状部32の四隅部分32A間が下向きに折り曲げられて(下向き折曲部32B)おり、四隅部分32Aの外周端面32aは台座22’に垂直に配在されて防水用接着剤50により実質的に被覆され、下向き折曲部32Bの外周端面32bは盛付台座24の上面から所定の隙間βをあけて水平に配在されて、盛付台座24に盛り付けられた防水用接着剤50中に埋設されている。   FIG. 3 shows another embodiment of the engine control apparatus according to the present invention. The engine control device 2 according to the present embodiment copes with a case where the outer peripheral end portion 33 of the hook-shaped portion 32 of the cover 30 cannot be bent downward as in the above-described embodiment due to the thickness of the cover 30 or the like. In the engine control apparatus 2 shown in the figure, only the four corner portions 32A of the hook-shaped portion 32 of the cover 30 are placed on the tightening base 22 ′ where the grooving groove 25 is not formed, and the hook-shaped portion The four corner portions 32A of the four corner portions 32A are bent downward (downward bent portions 32B), and the outer peripheral end surface 32a of the four corner portions 32A is disposed perpendicularly to the base 22 'and is substantially covered with the waterproofing adhesive 50. The outer peripheral end surface 32b of the downward bent portion 32B is horizontally arranged with a predetermined gap β from the upper surface of the pedestal pedestal 24 and embedded in the waterproofing adhesive 50 laid on the pedestal pedestal 24. Yes.
かかる構成のエンジン制御装置2においても、前記実施形態のものと略同様な作用効果が得られる。   Also in the engine control device 2 having such a configuration, substantially the same operational effects as those of the above-described embodiment can be obtained.
図4は、本発明に係るエンジン制御装置の他の実施形態を示している。図示のエンジン制御装置3は、ケース本体20及びカバー30の構造は図3に示されるものと同様であるが、止めねじ40によりカバー30をケース本体20に締付固定した後、四隅部分32Aが載せられる台座22’上に、防水用接着剤50を外周端面32aだけでなく、止めねじ40の頭部が埋まる高さまで盛り付けたものである(なお、この場合は、ゼリー状のものより粘性の低い液状の防水用接着剤を用いてもよい)。このように、防水用接着剤50の盛り付けをカバー30の締付固定後に行うようにしても良く、この場合も前記実施形態と略同様な作用効果が得られる。   FIG. 4 shows another embodiment of the engine control apparatus according to the present invention. In the illustrated engine control device 3, the structure of the case main body 20 and the cover 30 is the same as that shown in FIG. 3, but after the cover 30 is fastened and fixed to the case main body 20 by the set screw 40, the four corner portions 32A are formed. On the pedestal 22 ′ to be placed, the waterproofing adhesive 50 is placed not only at the outer peripheral end face 32a but also up to a height at which the head of the set screw 40 is buried (in this case, it is more viscous than the jelly-like one) A low liquid waterproofing adhesive may be used). As described above, the waterproof adhesive 50 may be placed after the cover 30 is tightened and fixed. In this case, the same effect as that of the above embodiment can be obtained.
図5は、図1、図2に示される実施形態のエンジン制御装置1において、カバー30の取付時に、締付台座22の中央に設けられた雌ねじ部26に防水用接着剤50が流れ込まないようにすべく、締付台座22の上端部に断面外形が矩形の凸部22aを突設したものである。なお、前記凸部22aを含む締付台座22の中央には、前記止めねじ40がねじ込まれる雌ねじ部26が設けられているので、前記凸部22aの形状は、図6に示される如くに、短円筒状(もしくは短角筒状)となる。   FIG. 5 shows that the waterproof adhesive 50 does not flow into the female thread portion 26 provided in the center of the fastening base 22 when the cover 30 is attached in the engine control apparatus 1 of the embodiment shown in FIGS. Therefore, a convex portion 22 a having a rectangular cross-sectional outer shape is provided on the upper end portion of the tightening base 22 so as to project. Since the female screw part 26 into which the set screw 40 is screwed is provided at the center of the fastening base 22 including the convex part 22a, the shape of the convex part 22a is as shown in FIG. It becomes a short cylindrical shape (or short rectangular tube shape).
また、前記止めねじ40によるカバー30の締付固定時の便宜(雌ねじ部26内の空気抜き)を図るべく、前記凸部22aの上端側には、断面V字状(U字状、半円形、矩形等でもよい)の切欠溝22sが少なくとも一箇所形成されている。   In addition, in order to facilitate the fastening and fixing of the cover 30 by the set screw 40 (air venting in the female thread portion 26), the upper end side of the convex portion 22a has a V-shaped cross section (U-shaped, semicircular, At least one notch groove 22s (which may be a rectangle or the like) is formed.
このように、空気抜き用切欠溝22s付きの凸部22aを設けたことにより、防水用接着剤50が雌ねじ部26に流れ込み難くなり、その結果、止めねじ40によるカバー30の締付固定時の便宜を図ることができるとともに、止めねじ40が緩んでしまうことを防止することができる。   Thus, by providing the convex portion 22a with the air notch groove 22s, it becomes difficult for the waterproofing adhesive 50 to flow into the female screw portion 26. As a result, it is convenient when the cover 30 is fastened and fixed by the set screw 40. In addition, the set screw 40 can be prevented from being loosened.
本発明に係るエンジン制御装置の一実施形態を示す概略分解斜視図。1 is a schematic exploded perspective view showing an embodiment of an engine control device according to the present invention. 図1に示されるエンジン制御装置を示し、(A)は断面図、(B)は(A)のB部の拡大図。The engine control apparatus shown by FIG. 1 is shown, (A) is sectional drawing, (B) is an enlarged view of the B section of (A). 本発明に係るエンジン制御装置の他の実施形態を示す部分拡大断面図。The partial expanded sectional view which shows other embodiment of the engine control apparatus which concerns on this invention. 本発明に係るエンジン制御装置の別の実施形態を示す部分拡大断面図。The partial expanded sectional view which shows another embodiment of the engine control apparatus which concerns on this invention. 図1、図2に示されるエンジン制御装置の変形例を示す部分拡大断面図。The partial expanded sectional view which shows the modification of the engine control apparatus shown by FIG. 1, FIG. 図5に示される締付台座に設けられた凸部の詳細形状を示す部分拡大斜視図。The partial expansion perspective view which shows the detailed shape of the convex part provided in the clamping base shown by FIG. 図1、図2に示される回路基板の回路構成を模式的に示すブロック図。The block diagram which shows typically the circuit structure of the circuit board shown by FIG. 1, FIG.
符号の説明Explanation of symbols
1、2、3…エンジン制御装置
12…回路基板
15…コネクタ
20…ケース本体
22…締付台座
22a…凸部
22s…切欠溝
24…盛付台座
25…盛付溝
26…雌ねじ部
30…カバー
32…鍔状部
33…外周端部
33a、32a、32b…外周端面
40…止めねじ
50…防水用接着剤
1, 2, 3 ... engine control device 12 ... circuit board 15 ... connector 20 ... case main body 22 ... tightening base 22a ... convex portion 22s ... notch groove 24 ... fill base 25 ... fill groove 26 ... female thread 30 ... cover 32 ... bowl-shaped part 33 ... outer peripheral end parts 33a, 32a, 32b ... outer peripheral end face 40 ... set screw 50 ... waterproofing adhesive

Claims (8)

  1. エンジン制御用の回路基板と、該回路基板等が収納される上面が開口したアルミダイカスト製のケース本体と、該ケース本体の上面開口を塞ぐように該ケース本体に止めねじで締付固定された、めっき鋼板等の予め表面処理が施された鉄系金属板を素材するカバーと、を備え、前記ケース本体の内部を封止すべく、前記ケース本体の上面開口部に液状ないしゼリー状の防水用接着剤が塗布ないし盛り付けられる台座もしくは溝が設けられ、該台座もしくは溝に塗布ないし盛り付けられた防水用接着剤により前記カバーの全外周端面が実質的に被覆されていることを特徴とするエンジン制御装置。   A circuit board for engine control, a case body made of aluminum die-casting with an open top surface for storing the circuit board and the like, and a fastening screw fixed to the case body so as to close the top surface opening of the case body A cover made of an iron-based metal plate that has been subjected to surface treatment in advance, such as a plated steel plate, and in order to seal the inside of the case body, a liquid or jelly-like waterproofing is provided in the upper surface opening of the case body An engine characterized in that a pedestal or groove on which an adhesive is applied or placed is provided, and the outer peripheral end surface of the cover is substantially covered with a waterproofing adhesive applied or placed on the pedestal or groove. Control device.
  2. エンジン制御用の回路基板と、該回路基板等収納される上面が開口したアルミダイカスト製のケース本体と、該ケース本体の上面開口を塞ぐように該ケース本体に止めねじで締付固定された、めっき鋼板等の予め表面処理が施された鉄系金属板を素材するカバーと、を備え、前記ケース本体の内部を封止するように、前記ケース本体の前記止めねじによる前記カバーの締付固定部より内周側における前記ケース本体と前記カバーとの間に液状ないしゼリー状の防水用接着剤が介装されるとともに、前記締付固定部を封止するように、前記締付固定部の外周側における前記ケース本体と前記カバーとの間にも液状ないしゼリー状の防水用接着剤が介装されていることを特徴とするエンジン制御装置。   A circuit board for engine control, a case main body made of aluminum die-casting with an open upper surface to be accommodated such as the circuit board, and the case main body tightened and fixed with a set screw so as to close the upper surface opening of the case main body, A cover made of a ferrous metal plate that has been previously surface-treated, such as a plated steel plate, and the cover body is tightened and fixed by the set screw of the case body so as to seal the inside of the case body A liquid or jelly-like waterproof adhesive is interposed between the case main body and the cover on the inner peripheral side of the part, and the fastening fixing part is sealed so as to seal the fastening fixing part. An engine control device characterized in that a liquid or jelly-like waterproof adhesive is interposed between the case main body and the cover on the outer peripheral side.
  3. 前記カバーは、予め表面にめっきが施された鉄系金属板を素材として打ち抜きプレス成形により作製したものであることを特徴とする請求項1又は2に記載のエンジン制御装置。   The engine control device according to claim 1 or 2, wherein the cover is made by punching and pressing an iron-based metal plate whose surface is previously plated.
  4. 前記カバーは、鍔状部を有する逆皿形ないしハット形とされ、前記鍔状部の全外周端面が前記台座もしくは溝に塗布ないし盛り付けられた防水用接着剤により実質的に被覆されていることを特徴とする請求項1から3のいずれか一項に記載のエンジン制御装置。   The cover has an inverted dish shape or hat shape having a hook-shaped portion, and the entire outer peripheral end surface of the hook-shaped portion is substantially covered with a waterproofing adhesive applied or placed on the pedestal or groove. The engine control device according to any one of claims 1 to 3, wherein
  5. 前記カバーにおける鍔状部の外周端部が下向きに折り曲げられていることを特徴とする請求項4に記載のエンジン制御装置。   The engine control device according to claim 4, wherein an outer peripheral end portion of the bowl-shaped portion of the cover is bent downward.
  6. 前記ケース本体及びカバーは、平面視矩形とされ、前記ケース本体の四隅に前記締付固定部が設けられていることを特徴とする請求項1から5のいずれか一項に記載のエンジン制御装置。   The engine control device according to any one of claims 1 to 5, wherein the case main body and the cover are rectangular in a plan view, and the fastening fixing portions are provided at four corners of the case main body. .
  7. 前記締付固定部に前記止めねじがねじ込まれる雌ねじ部が設けられるとともに、該雌ねじ部に前記防水用接着剤が流れ込まないようにすべく、前記締付固定部の上端部に凸部が突設されていることを特徴とする請求項1から6のいずれか一項に記載のエンジン制御装置。   A female screw portion into which the set screw is screwed is provided in the tightening fixing portion, and a convex portion is provided on the upper end portion of the tightening fixing portion so as to prevent the waterproof adhesive from flowing into the female screw portion. The engine control device according to any one of claims 1 to 6, wherein the engine control device is provided.
  8. 前記凸部に、空気抜き用の切欠溝が少なくとも一箇所形成されていることを特徴とする請求項7に記載のエンジン制御装置。   The engine control device according to claim 7, wherein at least one notch groove for venting air is formed in the convex portion.
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CN2007101118994A CN101098596B (en) 2006-06-29 2007-06-20 Engine control device
US11/768,401 US7561435B2 (en) 2006-06-29 2007-06-26 Engine controller
EP20070012827 EP1874103B1 (en) 2006-06-29 2007-06-29 Engine controller

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EP1874103A3 (en) 2009-09-02
US20080002377A1 (en) 2008-01-03
CN101098596B (en) 2011-12-14
EP1874103B1 (en) 2011-08-10
CN101098596A (en) 2008-01-02
EP1874103A2 (en) 2008-01-02
US7561435B2 (en) 2009-07-14
JP4357504B2 (en) 2009-11-04

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